Telemedicine is the use of technology to deliver medical care remotely, allowing doctors to diagnose, treat, and follow up with patients without an in-person office visit. It typically involves video calls, phone consultations, or secure messaging between you and a physician. Before the pandemic, only about 15% of physicians used telemedicine. By 2021, that number had jumped to 86.5%, and virtual visits have remained a standard part of healthcare ever since.
How Telemedicine Works
Telemedicine visits fall into three categories based on how you and your doctor communicate.
Live video or phone visits are the most familiar type. You connect with your doctor in real time, just as you would in an exam room, but through a screen. These synchronous visits work well for discussing symptoms, reviewing test results, or managing ongoing conditions.
Store-and-forward visits (sometimes called e-visits) don’t require you and your doctor to be online at the same time. You might upload photos of a skin rash, fill out a symptom questionnaire, or send a message through a patient portal. Your doctor reviews the information later and responds with a diagnosis or treatment plan. This approach is especially common in dermatology, where a clear photo can be just as useful as an in-person look.
Remote patient monitoring uses devices at home, like blood pressure cuffs, glucose monitors, or wearable heart rate trackers, to automatically send health data to your care team. Your doctor reviews the data over time and reaches out if something needs attention. There’s no back-and-forth conversation required on your end.
Telemedicine vs. Telehealth
The two terms are often used interchangeably, but they’re not identical. Telemedicine refers specifically to clinical care delivered by doctors: diagnosing conditions, prescribing medications, adjusting treatment plans. Telehealth is a broader umbrella that also covers services from nurses, pharmacists, social workers, and other professionals. If a pharmacist walks you through medication side effects over video, or a social worker checks in on a caregiver’s wellbeing, that’s telehealth rather than telemedicine. For most people searching for either term, the practical experience is the same: a healthcare visit that happens through a screen instead of in a waiting room.
What You Need for a Visit
The setup is simple. You need a device with a camera and microphone (a smartphone, tablet, or computer) and a stable internet connection. Most providers use a dedicated app or a web-based portal where you log in at your appointment time. Some visits are audio-only phone calls, which can work if you don’t have reliable internet or a camera-equipped device. Your provider’s office will typically send instructions and a link before the appointment.
What Telemedicine Treats Best
Telemedicine is effective for any condition that doesn’t require hands-on examination or lab work at the time of the visit. Some specialties have embraced it more than others.
Dermatology was one of the earliest adopters, with remote consultations dating back to 1997. Diagnostic accuracy and treatment effectiveness in teledermatology are considered equal to in-person visits. The American Academy of Dermatology has stated that telehealth is equally effective for managing inflammatory skin conditions like eczema and psoriasis. In practice, virtual dermatology visits tend to focus on acne and viral skin lesions, while in-person visits handle skin cancer screenings and biopsies.
Psychiatry and mental health have seen some of the fastest growth. Use of telehealth in psychiatry by state agencies nearly doubled between 2010 and 2017, rising from about 15% to 29%. Studies suggest virtual mental health care broadens access and improves the rate at which patients meet behavioral goals. In emergency departments, psychiatry is the second most common use of telehealth, right behind stroke consultations.
Neurology works well remotely for conditions like multiple sclerosis, Parkinson’s disease, dementia, and vertigo, where video allows the doctor to observe movement and symptoms. Cardiology uses telemedicine for palpitations, high blood pressure, abnormal heart rhythms, and cholesterol management. Endocrinology relies on it for diabetes education, insulin adjustments, and thyroid medication follow-ups. Infectious disease specialists use virtual visits to manage HIV, hepatitis C, and tuberculosis treatment.
Where Telemedicine Falls Short
Virtual care supplements in-person visits; it doesn’t replace them entirely. Any situation requiring emergency intervention, hands-on examination, or immediate lab work is poorly suited for a screen. A doctor can’t palpate your abdomen, listen to your lungs with a stethoscope, or draw blood remotely. There’s also the risk that you might not mention a symptom that a doctor would have noticed during a physical exam, like an unusual mole on your back or swollen lymph nodes. For acute emergencies like chest pain, difficulty breathing, or signs of a stroke, in-person care remains essential because life-saving interventions can’t be delivered remotely.
Cost and Time Savings
The financial benefits of telemedicine extend well beyond the visit itself. A study at a major cancer center tracked over 25,000 telehealth visits and found that patients collectively saved nearly 3.8 million miles of driving and about 75,000 hours of travel time. Each virtual visit saved patients an average of $141 to $186 in total costs, including fuel, vehicle wear, and lost income from time away from work. For patients managing chronic conditions that require frequent follow-ups, those savings add up quickly over months and years.
Medicare, Medicaid, and most private insurers now cover telemedicine visits, though the specifics of copays and eligible visit types vary by plan. It’s worth checking with your insurance before scheduling to confirm what’s covered.
Privacy Protections
Telemedicine platforms used by healthcare providers must comply with federal privacy law (HIPAA), which means your medical information is encrypted and protected during transmission. Providers are required to use technology vendors that meet these security standards and sign formal agreements to safeguard your data. This is why your doctor’s office uses a specific video platform rather than a standard consumer video call. If you’re using a provider’s official app or patient portal, the privacy protections are already built in.
How Doctors Are Using It Now
While adoption surged during the pandemic, telemedicine has settled into a supplementary role for most physicians rather than a primary mode of care. Among primary care doctors, about 54% use telemedicine for fewer than a quarter of their visits, while only about 15% use it for half or more. Medical specialists lean on it a bit more heavily: 27% conduct at least half their visits virtually. Surgical specialists use it the least, which makes sense given the hands-on nature of their work.
The pattern reflects what telemedicine does best. It’s ideal for follow-ups, medication management, reviewing results, and triaging new symptoms. Initial evaluations for complex or unclear conditions, procedures, and anything requiring physical contact still happen in person. For most patients, telemedicine means fewer trips to the office for routine check-ins, not a complete shift away from face-to-face care.